Update the footnote references in the section so the text becomes the following:Monitor CO2 concentrations within all densely occupied spaces (thosewith a design occupant density of 25 people or more per 1,000 squarefeet). CO2 monitors must be between 3 and 6 feet above the floor.?Provide a direct outdoor airflow measurement device capable ofmeasuring the minimum outdoor air intake flow with an accuracy of plusor minus 15% of the design minimum outdoor air rate, as defined byASHRAE 62.1-2007 (with errata but without addenda?) for mechanicalventilation systems where 20% or more of the design supply airflowserves nondensely occupied spaces.